|Publication number||US6968568 B1|
|Application number||US 09/467,418|
|Publication date||Nov 22, 2005|
|Filing date||Dec 20, 1999|
|Priority date||Dec 20, 1999|
|Also published as||CN1197299C, CN1301098A, DE60044389D1, EP1113606A2, EP1113606A3, EP1113606B1|
|Publication number||09467418, 467418, US 6968568 B1, US 6968568B1, US-B1-6968568, US6968568 B1, US6968568B1|
|Inventors||Edwin James Hilpert, Jr., Michael Joseph Sullivan, William J. Tracey, Jonathan Mark Wagner|
|Original Assignee||International Business Machines Corporation|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (29), Referenced by (10), Classifications (37), Legal Events (4)|
|External Links: USPTO, USPTO Assignment, Espacenet|
1. Technical Field
The present invention generally relates to user controlled selection and filtration of broadcast information for viewing and in particular to user selection of serially broadcast information which repeatedly cycles. Still more particularly, the present invention relates to employing meta frames allowing a user to select and filter frames from a series of frames which are serially broadcast in a continuous cycle.
2. Description of the Related Art
Contemporary real-time dissemination of information to large numbers of recipients generally occurs through radio and television broadcasts. The content and timing of the information is typically at the discretion of the broadcaster, with the recipients only having the option of selecting a particular channel. With the advent of “Webcasting,” or broadcasting real-time on the Internet, and particularly with the increase of wireless devices, such a handheld organizers and mobile telephones, which are capable of providing mobile access to the Internet, user selection and/or filtration of the broadcast information received and presented to the user in a manner not requiring the use of “channels”—either real (e.g., frequency-based) or virtual (e.g., different addresses) channels—is necessary in light of market demands for user control over selection of the content which the user views.
Excluding, momentarily, broadcast of information intended purely for entertainment, a variety of circumstances arise where dissemination of information to a broad range of users would benefit from user filtration of received data. For example, a user entering a grocery store with a handheld device may receive, from a localized transmitter operated by the store, information regarding the store and the items which the grocery store sells. The broadcast information may be, for instance, the content of the grocery store's Web site, the pages of which are repeatedly, serially broadcast. The pages may include, for example, a page providing search capabilities on the shelf location, price, and nutritional information of items which the store sells. The user may wish to view only that search page in order to retrieve data relevant to item(s) in which she is interested, or only information regarding a specified list of items and any special discounts which the grocery store may currently offer.
The data received by the handheld device in this example is in an architected format readily retrievable for consumption by the user in a preferred form (e.g., display, audio playback, etc.). However, wireless handheld devices currently introduce a number of limitations which must be overcome, including: capability to receive only low-bandwidth transmissions; limited storage; varying capabilities among devices (Palm Pilot, Win CE, etc.); and low processor speed. Additionally, broadcast of information to multiple recipients over shared transmission media does not generally permit customization of broadcast content to individual users or communication of requests from the user(s) to the broadcast device.
It would be desirable, therefore, to enable a user to select from information serially broadcast in continuous cycles for viewing.
It is therefore one object of the present invention to provide a method, system, and computer program product for user controlled selection and filtration of broadcast information for viewing.
It is another object of the present invention to provide a method, system, and computer program product for user selection of serially broadcast information which repeatedly cycles.
It is yet another object of the present invention to provide a method, system, and computer program product for employing meta frames allowing a user to select and filter frames from a series of frames which are serially broadcast in a continuous cycle.
The foregoing objects are achieved as is now described. Broadcast information is classified in categories to facilitate user selection and filtration of the broadcast information which is processed for presentation to the user. The broadcast information is transmitted in the form of a meta frame and one or more category frames which are repeated in a continuous cycle. Meta frames and category frames are distinguished and identified by major and minor codes following a frame starting delimiter. The meta frame contains a description of each of the available categories, together with an identification of respective category major and minor codes, the frequency on which the respective category frame is transmitted if multiple frequencies are employed, and the relative position of the respective category frame within transmission cycle. If multiple frequencies are employed, the meta frame may be repeatedly broadcast on a base frequency while subsets of the category frames are transmitted on different frequencies, or the meta and category frames may be repeated in sequence on all frequencies but with varying offsets. Upon user selection of a category, the category information within the meta frame is employed to construct or key a filter for the broadcast information. The selected category frame data is received and added to a local database, formatted, and presented to the user.
The above as well as additional objectives, features, and advantages of the present invention will become apparent in the following detailed written description.
The novel features believed characteristic of the invention are set forth in the appended claims. The invention itself however, as well as a preferred mode of use, further objects and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiment when read in conjunction with the accompanying drawings, wherein:
With reference now to the figures, and in particular with reference to
One or more clients within data processing system network 102, such as client 110, may be a wireless device such as a mobile telephone or a handheld organizer capable of receiving data on one or more defined frequencies in a predetermined format. Data from a server 104 to client 110 may be transmitted over conventional wireless networks connected to Transmitter 112 or from a localized transmitter coupled directly to server 104 and transmitting with a set range covering, for example, space occupied by an enterprise. In either case, existing wireless communication protocols and devices may be adapted for broadcast and reception of data in the manner described herein.
Wireless device or client 110 receives information broadcast on a predefined frequency or band by server 104 includes an application 114 enabling the user to selectively filter the broadcast information which is received. The selective filtration enables the wireless device or client 110 to display, play, or otherwise present to the user only user-selected portions of the broadcast information. The application 114 may be a browser application with the functionality described herein.
The master meta frame recurs at fixed intervals within each cycle, and contains information describing the format and timing of other frames within the cycle:
Category frames contain data, and may be preindexed to accelerate database access on the client. A suitable format for category frames is:
In operation, the meta frame within each broadcast cycle is employed by the handheld device to present available categories to the user. When the user selects a category of interest, the information regarding that category is employed to create a reception filter within the handheld device. The reception filter may simply be keyed, for a selected category, to the Major and/or Minor Codes of the category frame for the selected category. Frequency and timing information for the desired category frame may also be employed as part of the filter. Once the filter is created or keyed to the selected category, the handheld device monitors monitors the broadcast frequency or frequencies to receive and process frames carrying the matching category major (and, optionally, minor) code. The received frames are stored in a data base on the handheld device for further parsing and presentation to the user.
In cases where a large amount of item data for a category needs to be broadcast, broadcast of the cycles of meta and category frames described above may need to be conducted across several frequencies in order to achieve the bandwidth necessary for acceptable throughput. It is envisioned that the meta frame record for each category will contain information on the different frequencies employed for broadcast, together with the relative position of category frames within each frequency broadcast cycle containing frames within the respective category. Two possible configurations for utilizing frequency/timing to achieve broadband throughput, illustrated in
With reference now to
The process passes next to step 310, which depicts a determination of whether the user has selected a category for presentation. If not, the process remains at step 310 awaiting user selection of the categories available for display. If so, however, the process proceeds instead to step 312, which illustrates extracting the selected category data, identified by the major and minor codes for the category selected by the user, from the broadcast data being received. Frequency hopping to a specified frequency bearing the selected category data, or bearing the selected category data at an offset closest to the user selection of the data. The selected category data, once received, is added to the locally stored database, formatted for presentation to the user, and presented to the user, either by graphic display, audio playback, video playback, or some combination of all three.
Display of selected category may, optionally, include monitoring the broadcast data for updates to the selected category data, identified by the sequence number of the category frame received. If update monitoring is enabled, the process proceeds next to step 314, which depicts monitoring the broadcast information for an update to the selected category frame. If an updated category frame is detected, the process proceeds to step 316, which illustrates extracting the updated category frame from the broadcast, updating the contents for the category within the database, formatting the extracted category frame for presentation to the user, and updating the display or other presentation device. In this manner, the present invention may be employed for real-time broadcasts (music, videos, etc.) with user selection of the content viewed or listened to from various alternatives.
If the update monitoring option has not been enabled, or if the category frame has not been updated since last extracted and presented to the user, the process proceeds instead to step 318, which illustrates a determination of whether another category has been selected by the user. The available categories specified within the meta frame may be displayed to the user on the handheld device together with the content of the selected category frame, enabling the user to select a different category at any time. The categories displayed may be updated with any changes to the contents of the meta frame. If the user selects a different category, the process returns to step 312, and extracts the category frame for the newly-selected category from the broadcast, adding the new category frame to handheld device's database, and formatting and presenting the new category data to the user.
If the user has not selected a new category, however, the process proceeds instead to step 320, which depicts a determination of whether the application executing within the handheld device which receives broadcast information has been terminated. If not, the process returns to step 314 (if enabled) or 316, to determine if an update to the category frame has been received or if the user has selected a different category. If so, however, the process proceeds to step 322, which illustrates the process becoming idle until the application is restarted and another broadcast is detected. The category frames extracted from the broadcast may be discarded.
The present invention may be employed to enable user selection of information from a content server despite the inability to support client-server type requests from the receiving device. Content may be distributed among a number of users by broadcasting on a common frequency or band, or transmission on other common media. The present invention is well suited to selective filtration and receipt of information in handheld devices having low bandwidth reception capabilities, limited storage, low processor speed, and varying capabilities or devices. Additionally, the present invention lends itself to the offering of pay-per-view services. It is conceivable that the user may purchase a “key” (e.g., encryption key, frequency specifier, etc.) enabling access to the broadcast information. The software could require this key or code prior to receiving the broadcast data, with the key being changed at some predetermined interval.
It is important to note that while the present invention has been described in the context of a fully functional data processing system and/or network, those skilled in the art will appreciate that the mechanism of the present invention is capable of being distributed in the form of a computer usable medium of instructions in a variety of forms, and that the present invention applies equally regardless of the particular type of signal bearing medium used to actually carry out the distribution. Examples of computer usable mediums include: nonvolatile, hard-coded type mediums such as read only memories (ROMs) or erasable, electrically programmable read only (EEPROMs), recordable type mediums such as floppy disks, hard disk drives and CD-ROMs, and transmission type mediums such as digital and analog communication links.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
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|U.S. Classification||725/90, 725/141, 725/118, 725/98, 725/109, 725/93, 725/153|
|International Classification||H04N21/262, H04N21/61, H04N21/414, H04N21/482, H04L12/58, G06F21/00, H04L12/18, H04H20/82, H04H60/73, H04H60/07|
|Cooperative Classification||H04N21/26266, H04H20/82, H04N21/26291, H04H60/07, H04N21/41407, H04N21/6125, H04H20/16, H04N21/482, H04L12/1859, H04H60/73, H04L12/585|
|European Classification||H04N21/262R, H04N21/262U, H04N21/414M, H04N21/61D3, H04N21/482, H04H20/16, H04H60/07, H04L12/18P, H04H60/73|
|Dec 20, 1999||AS||Assignment|
Owner name: INTERNATIONAL BUSINESS MACHINES CORPORATION, NEW Y
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HILPERT, EDWIN J., JR.;SULLIVAN, MICHAEL J.;TRACEY, WILLIAM J.;AND OTHERS;REEL/FRAME:010651/0012
Effective date: 19991216
|Apr 17, 2009||FPAY||Fee payment|
Year of fee payment: 4
|Oct 1, 2010||AS||Assignment|
Owner name: GOOGLE INC., CALIFORNIA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:INTERNATIONAL BUSINESS MACHINES CORPORATION;REEL/FRAME:025077/0868
Effective date: 20100930
|Mar 5, 2013||FPAY||Fee payment|
Year of fee payment: 8